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No Bug - Assert that our Rooting ABI is correct; r=sfink

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--HG--
extra : rebase_source : 3247d6a22f73d278ae4e6904dff28a1b727e5169
This commit is contained in:
Terrence Cole 2013-06-13 15:14:44 -07:00
parent 6ecaa921b7
commit fa77ae873c
1 changed files with 9 additions and 1 deletions
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10
js/public/RootingAPI.h
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@ -178,7 +178,11 @@ template <typename T>
class Heap : public js::HeapBase<T>
{
public:
Heap() { set(js::RootMethods<T>::initial()); }
Heap() {
MOZ_STATIC_ASSERT(sizeof(T) == sizeof(Heap<T>),
"Heap<T> must be binary compatible with T.");
set(js::RootMethods<T>::initial());
}
explicit Heap(T p) { set(p); }
explicit Heap(const Heap<T> &p) { set(p.ptr); }
@ -251,6 +255,8 @@ class MOZ_NONHEAP_CLASS Handle : public js::HandleBase<T>
Handle(Handle<S> handle,
typename mozilla::EnableIf<mozilla::IsConvertible<S, T>::value, int>::Type dummy = 0)
{
MOZ_STATIC_ASSERT(sizeof(Handle<T>) == sizeof(T *),
"Handle must be binary compatible with T*.");
ptr = reinterpret_cast<const T *>(handle.address());
}
@ -880,6 +886,8 @@ template <typename T>
inline
MutableHandle<T>::MutableHandle(Rooted<T> *root)
{
MOZ_STATIC_ASSERT(sizeof(MutableHandle<T>) == sizeof(T *),
"MutableHandle must be binary compatible with T*.");
ptr = root->address();
}